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harina [27]
3 years ago
9

a car can travel 1 km in 1 minute and 12 seconds. How many km will the car travel in 1 hour at the given rate?

Mathematics
1 answer:
vampirchik [111]3 years ago
3 0
    1km                 x
------------- =  ------------
1.12 mins      60 mins


1.12 x = 60
1.12x/ 1.12 = 60/ 1.12
x = (approximately) 53.57 km
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Step-by-step explanation:

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sergij07 [2.7K]
f(t)=\begin{cases}0&\text{for }t

Recall that

u(t)=\begin{cases}0&\text{for }t

Take it one piece at a time. For t\ge0, we can scale u(t) by -5:

-5u(t)=\begin{cases}0&\text{for }t

If we shift the argument by 1 and scale by -5, we have

-5u(t-1)=\begin{cases}0&\text{for }t

so if we subtract this from -5u(t), we'll end up with

-5u(t)+5u(t-1)=\begin{cases}0&\text{for }t

For the next piece, we can add another scaled and shifted step like

-6u(t-1)+6u(t-7)=\begin{cases}0&\text{for }t

so that

-5u(t)+5u(t-1)-6u(t-1)+6u(t-7)=\begin{cases}0&\text{for }t

For the last piece, we add one more term:

6u(t-7)=\begin{cases}0&\text{for }t

and so putting everything together, we get f(t):

f(t)\equiv-5u(t)+5u(t-1)-6u(t-1)+6u(t-7)+6u(t-7)
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3 years ago
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weqwewe [10]

Answer:

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Step-by-step explanation:

Given that Chang has 2 shirts, a white one and a black one, and he also has 2 pairs of pants, one blue and one tan, to determine what is the probability, if Chang gets dressed in the dark, that he winds up wearing the white shirt and tan pants the following calculation must be performed:

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Therefore, the probability that Chang gets dressed with a white shirt and tan pants is 25%.

5 0
3 years ago
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